CN111856384A - Power supply control equipment and method - Google Patents
Power supply control equipment and method Download PDFInfo
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- CN111856384A CN111856384A CN202010639658.2A CN202010639658A CN111856384A CN 111856384 A CN111856384 A CN 111856384A CN 202010639658 A CN202010639658 A CN 202010639658A CN 111856384 A CN111856384 A CN 111856384A
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- 238000012360 testing method Methods 0.000 claims abstract description 32
- 230000007935 neutral effect Effects 0.000 claims description 2
- 230000008569 process Effects 0.000 abstract description 10
- 238000010586 diagram Methods 0.000 description 6
- 238000004891 communication Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010295 mobile communication Methods 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/04—Testing or calibrating of apparatus covered by the other groups of this subclass of instruments for measuring time integral of power or current
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
- G01R15/002—Switches for altering the measuring range or for multitesters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/10—Monitoring; Testing of transmitters
- H04B17/15—Performance testing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/20—Monitoring; Testing of receivers
- H04B17/29—Performance testing
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Abstract
The invention discloses a power supply control device and method. Wherein, the method comprises the following steps: sending a power supply control instruction to the direct-current power supply through the test system; after the direct-current power supply receives the power supply control instruction, executing power supply power-on or power supply power-off of the direct-current power supply according to the power supply control instruction; when the power supply of the direct current power supply is electrified, controlling the relay to be conducted, closing a live wire line between the commercial power supply and the electric power meter, and electrifying and starting the electric power meter; when the power supply of the direct current power supply is powered off, the relay is controlled to be not conducted, so that the live wire line between the mains supply and the electric power meter is disconnected, and the electric power meter is powered off. The simple and efficient power supply control scheme is realized, the control convenience of the electric power meter in the test process is enhanced, the system overhead is reduced, and the space requirement and the implementation cost of engineering implementation are reduced.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a power control device and method.
Background
In the prior art, with the rapid development of the internet of things technology, various mobile communication modules are increasingly used in various industries to realize the interconnection of everything. Particularly, in the electric power industry, assemble the mobile communication module in electric power meter terminal to realize the intellectuality at electric power meter terminal fast, can realize remote communication, remote control, long-range meter reading etc. very big improvement efficiency, save the cost.
In the current development process of the smart electric meter, in order to ensure the reliability of the wireless communication performance of the product, a relevant radio frequency performance test needs to be performed on the whole meter, but in tens of thousands of radio frequency test cases, a terminal needs to cooperate with the setting conditions of each specific case to complete certain startup or shutdown actions, for example, in an NB-IoT (Narrow Band Internet of things) network system, almost every case needs to be started up and shut down once, in an actual test, a common mode is to realize soft startup and shutdown of the terminal by sending an AT command to the terminal, and another mode is to realize hard startup and shutdown by controlling the external power supply of the terminal to be powered up and down, but in terms of the terminal of the smart electric meter, the terminal is limited by the hardware design principle and layout, and the realization of soft shutdown is difficult because no redundant space is reserved for a communication port on hardware, it is difficult to implement the AT command transmission. Therefore, compared with the prior art, the method for controlling the power supply to be powered up and down by selecting the second power supply is simple and practical, but the power meter terminal is powered by the alternating current mains supply, so that the technical scheme in the prior art is that a programmable alternating current power supply cabinet is adopted, so that the repeated on-off control of the alternating current mains supply is realized, but the technical scheme for carrying out the program control by using the alternating current power supply cabinet is high in cost, high in operation difficulty and not beneficial to engineering implementation.
Disclosure of Invention
In order to solve the technical defects in the prior art, the invention provides power supply control equipment which comprises a test system, a direct-current power supply, a relay, a mains supply and a power meter, wherein the output end of the test system is connected with the input end of the direct-current power supply, the output end of the direct-current power supply is connected with the input end of the relay, and the output end of the relay is connected to a mains supply live wire between the mains supply and the power meter in series.
Optionally, the relay the mains supply includes two outputs respectively, the electric power meter includes two inputs, wherein, the first output of relay passes through the commercial power live wire is connected to mains supply's first output, the second output of relay passes through the commercial power live wire is connected to electric power meter's first input.
Optionally, the second output end of the mains supply is connected with the second input end of the electric power meter through a mains zero line.
Optionally, the dc power supply includes two output terminals, which are respectively an anode and a cathode, wherein the first input terminal of the relay is connected to the anode of the dc power supply, and the second input terminal of the relay is connected to the cathode of the dc power supply.
Optionally, the voltage value of the dc power supply is lower than the voltage value of the mains supply.
The invention also provides a power supply control method, which comprises the following steps:
sending a power supply control instruction to the direct-current power supply through the test system;
after the direct-current power supply receives the power supply control instruction, executing power supply power-on or power supply power-off of the direct-current power supply according to the power supply control instruction;
when the power supply of the direct current power supply is electrified, controlling the relay to be conducted, closing a live wire line between the commercial power supply and the electric power meter, and electrifying and starting the electric power meter;
when the power supply of the direct current power supply is powered off, the relay is controlled to be not conducted, so that the live wire line between the mains supply and the electric power meter is disconnected, and the electric power meter is powered off.
Optionally, the sending, by the test system, the power control instruction to the dc power supply includes:
compiling a restart instruction list of the power electric meter according to the current radio frequency test requirement;
and generating the power supply control instruction according to the restart instruction table.
Optionally, after the dc power supply receives the power supply control instruction, executing power supply powering on or powering off of the dc power supply according to the power supply control instruction, including:
The input end of the relay is connected with the output end of the direct current power supply, when the power supply of the direct current power supply is electrified, the relay is controlled to be conducted, and when the power supply of the direct current power supply is electrified, the relay is controlled not to be conducted.
Optionally, the controlling the relay to be turned on when the power supply of the dc power supply is powered on, and the controlling the relay to be turned off when the power supply of the dc power supply is powered off includes:
the commercial power supply is connected with the electric power meter through a commercial power zero line and a commercial power live wire, wherein the output end of the relay is connected to the commercial power live wire between the commercial power supply and the electric power meter in series;
when the relay is switched on, a live wire circuit between the mains supply and the electric power meter is closed, and the electric power meter is powered on and started;
and when the relay is not conducted, the live wire line between the commercial power supply and the electric power meter is disconnected, and the electric power meter is powered off.
Optionally, the output voltage of the output terminal of the dc power supply is 12V.
The power supply control equipment and the method of the invention are implemented, and a power supply control instruction is sent to the direct current power supply through the test system; after the direct-current power supply receives the power supply control instruction, executing power supply power-on or power supply power-off of the direct-current power supply according to the power supply control instruction; when the power supply of the direct current power supply is electrified, controlling the relay to be conducted, closing a live wire line between the commercial power supply and the electric power meter, and electrifying and starting the electric power meter; when the power supply of the direct current power supply is powered off, the relay is controlled to be not conducted, so that the live wire line between the mains supply and the electric power meter is disconnected, and the electric power meter is powered off. The simple and efficient power supply control scheme is realized, the control convenience of the electric power meter in the test process is enhanced, the system overhead is reduced, and the space requirement and the implementation cost of engineering implementation are reduced.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic diagram of a first connection of the power control apparatus of the present invention;
FIG. 2 is a second schematic connection diagram of the power control apparatus of the present invention;
FIG. 3 is a third schematic connection diagram of the power control apparatus of the present invention;
fig. 4 is a first flowchart of the power control method of the present invention.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the following description, suffixes such as "module", "component", or "unit" used to denote elements are used only for facilitating the explanation of the present invention, and have no specific meaning in itself. Thus, "module", "component" or "unit" may be used mixedly.
Example one
Fig. 1 is a first connection diagram of the power control apparatus of the present invention. The invention provides a power supply control device, which comprises a test system 10, a direct current power supply 20, a relay 30, a mains supply 40 and an electric power meter 50, wherein the output end of the test system 10 is connected with the input end of the direct current power supply 20, the output end of the direct current power supply 20 is connected with the input end of the relay 30, and the output end of the relay 30 is connected to a mains supply live wire between the mains supply 40 and the electric power meter 50 in series.
Specifically, in this embodiment, based on the prior art that the commercial power source 40 and the electric power meter 50 are directly connected to each other through the commercial power live wire and the commercial power zero line, the present embodiment modifies the commercial power live wire between the commercial power source 40 and the electric power meter 50, that is, adds a relay 30 using low-voltage direct current as a working source between the commercial power live wire between the commercial power source 40 and the electric power meter 50, so as to connect the relay 30 in series to the commercial power live wire between the commercial power source 40 and the electric power meter 50.
Specifically, in this embodiment, the relay 30 has two working states, i.e., a connection-disconnection state and a connection-closure state, so that the relay 30 can be used to disconnect and close the live line of the utility power between the utility power supply 40 and the electric power meter 50. Meanwhile, the commercial power supply 40 is connected with the electric power meter 50 through a commercial power zero line, so that when the relay 30 is in a connection closed state, a closed loop is formed among the commercial power supply 40, the electric power meter 50, the relay 30, the commercial power live wire and the commercial power zero line, at the moment, the commercial power supply 40 can normally supply power to the electric power meter 50, and when the electric power meter is recovered from power failure to normal power supply, the power-on control of the electric power meter can be realized; similarly, when the relay 30 is in the disconnected state, a closed loop cannot be formed among the commercial power supply 40, the electric power meter 50, the relay 30, the live wire and the zero line, at this time, the commercial power supply 40 cannot normally supply power to the electric power meter 50, and when the electric power meter is switched from the normal power supply to the power failure, the power-off control of the electric power meter can be realized.
Specifically, in the present embodiment, since the relay 30 requires an external power supply to perform the opening or closing operation, the present embodiment controls the operating state of the relay by the dc power supply 20 connected to the input terminal of the relay 30. For example, when the dc power supply 20 supplies the voltage source required for the normal operation of the relay 30 to the relay 30, the relay 30 enters an operation state in which the connection is closed, and when the dc power supply 20 does not supply the voltage source required for the normal operation of the relay 30 to the relay 30, the relay 30 enters an operation state in which the connection is open; alternatively, when the direct-current power supply 20 supplies the voltage source required for the normal operation of the relay 30 to the relay 30, the relay 30 enters the operation state in which the connection is open, and when the direct-current power supply 20 does not supply the voltage source required for the normal operation of the relay 30 to the relay 30, the relay 30 enters the operation state in which the connection is closed.
Specifically, in this embodiment, in order to ensure the reliability of the wireless communication performance of the product during the research and development and testing process of the electric power meter 50, it is necessary to perform a related radio frequency performance test on the electric power meter 50, but in several tens of thousands of radio frequency test cases, the electric power meter 50 is required to complete a certain startup or shutdown operation in cooperation with the setting conditions of each specific case, so that the present embodiment proposes to control the operating state of the dc power supply 20 through the test system 10 connected to the dc power supply 20, thereby indirectly implementing the control on the relay 30, and indirectly implementing the control on/off state of the electric power meter 50.
Optionally, in this embodiment, the test system 10 obtains a current radio frequency test requirement, generates a control command of the dc power supply 20 according to the radio frequency test requirement, and controls the voltage output state of the dc power supply 20 through the control command.
The beneficial effect of this embodiment lies in, through a power control equipment, this equipment includes test system 10, DC power supply 20, relay 30, mains supply 40 and electric power meter 50, wherein, test system 10's output with DC power supply 20's input links to each other, DC power supply 20's output with relay 30's input links to each other, relay 30's output series extremely mains supply 40 with on the commercial power live wire between the electric power meter 50. The simple and efficient power supply control scheme is realized, the control convenience of the electric power meter 50 in the test process is enhanced, the system overhead is reduced, and the space requirement and the implementation cost of engineering implementation are reduced.
Example two
Fig. 2 is a second connection diagram of the power control apparatus of the present invention. Based on the above embodiment, the relay 30 the utility power source 40 includes two output ends respectively, the electric power meter 50 includes two input ends, wherein, the first output end 33 of the relay 30 is through the live wire of the utility power is connected to the first output end 41 of the utility power source 40, the second output end 34 of the relay 30 is through the live wire of the utility power is connected to the first input end 51 of the electric power meter 50.
In this embodiment, the second output 42 of the utility power source 40 is connected to the second input 52 of the electric power meter 50 via the neutral line of the utility power.
Optionally, when there are a plurality of electric power meters 50 to be tested, a relay 30 is connected in series to the live line of the utility power between the electric power meter 50 and the utility power source 40, and the on/off operation of the corresponding electric power meter 50 is controlled through each relay 30;
optionally, a plurality of sets of switches are built in the relay 30, correspondingly, a plurality of sets of output ends are arranged outside the relay 30, when a plurality of electric power meters 50 to be tested are provided, the output ends of a set of relays 30 are respectively connected in series on the live wire of the utility power between the electric power meters 50 and the utility power source 40, and the on-off operation of the corresponding electric power meters 50 is controlled through each set of output ends of the relay 30.
The beneficial effect of this embodiment lies in, through setting up the connected mode of relay 30 with commercial power source 40 and electric power meter 50 respectively, has realized a suitability wider, and the more comprehensive power control scheme of function has reduced system overhead, has reduced the space demand and the implementation cost of engineering implementation.
EXAMPLE III
Fig. 3 is a third connection diagram of the power control apparatus of the present invention. Based on the above embodiment, the dc power supply 20 includes two output terminals, which are an anode 21 and a cathode 22, respectively, wherein the first input terminal 31 of the relay 30 is connected to the anode 21 of the dc power supply 20, and the second input terminal 32 of the relay 30 is connected to the cathode 22 of the dc power supply 20.
Optionally, in this embodiment, the voltage value of the dc power supply 20 is lower than the voltage value of the utility power supply 40, for example, the voltage value output by the dc power supply 20 is 12V.
Optionally, in this embodiment, when there are a plurality of electric power meters 50 to be tested, the relays 30 are correspondingly controlled by one dc power supply 20, so as to implement independent on-off control of the plurality of electric power meters 50;
optionally, in this embodiment, when there are a plurality of power meters 50 to be tested, a plurality of relays 30 are used to perform corresponding control, where the dc power supply 20 has voltage outputs in a plurality of different gears, and correspondingly adapts to the requirements of operating voltage sources of different relays 30, or matches the operating states of the same relay 30 in different voltage gears, so as to implement closing or opening operations on the circuit loops where the plurality of power meters 50 are located.
The embodiment has the advantages that by arranging the connection mode of the direct-current power supply 20 and the relay 30, a power supply control scheme with wider applicability and more comprehensive functions is realized, the system overhead is reduced, and the space requirement and the implementation cost of engineering implementation are reduced.
Example four
Fig. 4 is a first flowchart of the power control method of the present invention. Based on the above embodiment, the present invention further provides a power control method, including:
s1, sending a power supply control instruction to the direct current power supply through the test system;
s2, after the direct current power supply receives the power supply control instruction, executing power supply power-on or power supply power-off of the direct current power supply according to the power supply control instruction;
s3, when the power supply of the direct current power supply is electrified, controlling the relay to be conducted, so that a live wire circuit between the commercial power supply and the electric power meter is closed, and the electric power meter is electrified and started;
s4, when the power supply of the direct current power supply is powered off, the relay is controlled to be not conducted, so that the commercial power supply and the live wire between the electric power meters are disconnected, and the electric power meters are powered off.
Optionally, in order to send a power control command to the dc power supply through the test system, in this embodiment:
compiling a restart instruction list of the power electric meter according to the current radio frequency test requirement;
and generating the power supply control instruction according to the restart instruction table.
Optionally, in order to determine that the power supply of the dc power supply is powered on or powered off according to the power supply control instruction after the dc power supply receives the power supply control instruction, in this embodiment:
The input end of the relay is connected with the output end of the direct current power supply, when the power supply of the direct current power supply is electrified, the relay is controlled to be conducted, and when the power supply of the direct current power supply is electrified, the relay is controlled not to be conducted.
Optionally, in order to determine that the relay is turned on when the power supply of the dc power supply is powered on, and the relay is not turned on when the power supply of the dc power supply is powered off, in this embodiment:
the commercial power supply is connected with the electric power meter through a commercial power zero line and a commercial power live wire, wherein the output end of the relay is connected to the commercial power live wire between the commercial power supply and the electric power meter in series;
when the relay is switched on, a live wire circuit between the mains supply and the electric power meter is closed, and the electric power meter is powered on and started;
and when the relay is not conducted, the live wire line between the commercial power supply and the electric power meter is disconnected, and the electric power meter is powered off.
Optionally, in this embodiment, the output voltage of the output terminal of the dc power supply is 12V.
The method has the advantages that the test system sends the power supply control instruction to the direct-current power supply; after the direct-current power supply receives the power supply control instruction, executing power supply power-on or power supply power-off of the direct-current power supply according to the power supply control instruction; when the power supply of the direct current power supply is electrified, controlling the relay to be conducted, closing a live wire line between the commercial power supply and the electric power meter, and electrifying and starting the electric power meter; when the power supply of the direct current power supply is powered off, the relay is controlled to be not conducted, so that the live wire line between the mains supply and the electric power meter is disconnected, and the electric power meter is powered off. The simple and efficient power supply control scheme is realized, the control convenience of the electric power meter in the test process is enhanced, the system overhead is reduced, and the space requirement and the implementation cost of engineering implementation are reduced.
It should be noted that the method embodiment and the device embodiment belong to the same concept, and specific implementation processes thereof are detailed in the device embodiment, and technical features in the device embodiment are correspondingly applicable in the method embodiment, which is not described herein again.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. The utility model provides a power control equipment, its characterized in that, equipment includes test system, DC power supply, relay, mains supply and electric power ammeter, wherein, test system's output with DC power supply's input links to each other, DC power supply's output with the input of relay links to each other, the output of relay establish ties extremely mains supply with on the commercial power live wire between the electric power ammeter.
2. The power control apparatus of claim 1, wherein the relay and the mains power supply each comprise two outputs, and the power meter comprises two inputs, wherein a first output of the relay is connected to a first output of the mains power supply via the live mains wire, and a second output of the relay is connected to the first input of the power meter via the live mains wire.
3. The power control apparatus of claim 2, wherein the second output of the mains power supply is connected to the second input of the power meter by a mains neutral.
4. The power control apparatus of claim 1, wherein the dc power source comprises two output terminals, a positive terminal and a negative terminal, wherein the first input terminal of the relay is connected to the positive terminal of the dc power source and the second input terminal of the relay is connected to the negative terminal of the dc power source.
5. The power supply control device according to claim 1, wherein a voltage value of the direct current power supply is lower than a voltage value of the commercial power supply.
6. A method for controlling a power supply, the method comprising:
sending a power supply control instruction to the direct-current power supply through the test system;
after the direct-current power supply receives the power supply control instruction, executing power supply power-on or power supply power-off of the direct-current power supply according to the power supply control instruction;
when the power supply of the direct current power supply is electrified, controlling the relay to be conducted, closing a live wire line between the commercial power supply and the electric power meter, and electrifying and starting the electric power meter;
When the power supply of the direct current power supply is powered off, the relay is controlled to be not conducted, so that the live wire line between the mains supply and the electric power meter is disconnected, and the electric power meter is powered off.
7. The power control method of claim 6, wherein the sending of the power control command to the DC power source by the test system comprises:
compiling a restart instruction list of the power electric meter according to the current radio frequency test requirement;
and generating the power supply control instruction according to the restart instruction table.
8. The power control method according to claim 6, wherein the executing power supply power-up or power supply power-down of the dc power supply according to the power control command after the dc power supply receives the power control command comprises:
the input end of the relay is connected with the output end of the direct current power supply, when the power supply of the direct current power supply is electrified, the relay is controlled to be conducted, and when the power supply of the direct current power supply is electrified, the relay is controlled not to be conducted.
9. The power control method of claim 8, wherein controlling the relay to conduct when the power supply of the dc power supply is powered on and to not conduct when the power supply of the dc power supply is powered off comprises:
The commercial power supply is connected with the electric power meter through a commercial power zero line and a commercial power live wire, wherein the output end of the relay is connected to the commercial power live wire between the commercial power supply and the electric power meter in series;
when the relay is switched on, a live wire circuit between the mains supply and the electric power meter is closed, and the electric power meter is powered on and started;
and when the relay is not conducted, the live wire line between the commercial power supply and the electric power meter is disconnected, and the electric power meter is powered off.
10. The power supply control method according to claim 9, wherein an output voltage of the output terminal of the dc power supply is 12V.
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| CN202010639658.2A CN111856384A (en) | 2020-07-06 | 2020-07-06 | Power supply control equipment and method |
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| CN202010639658.2A CN111856384A (en) | 2020-07-06 | 2020-07-06 | Power supply control equipment and method |
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| CN111239617A (en) * | 2020-02-24 | 2020-06-05 | Tcl移动通信科技（宁波）有限公司 | Control method and device for charge and discharge test, storage medium and system |
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